Table 25-1. Estimates of Turbulent Energy 
Dissipation Rates in the Experimental Microcosms 
and in Some Natural Marine Waters 
Microcosms with one paddle 
Microcosms with half paddle 
Microcosms with no paddle 
Narragansett Bay, West Passage 
measured at different times 
Narragansett Bay, West Passage 
estimated from tidal currents, 
( Levine and Kenyon, 1975) 
Irish Sea, estimated from tidal 
currents (Taylor, 1919) 
N.W. Pacific coastal water, U.S.A. 
surface 30m, calcualted from 
changes in microstructure 
(P.W. Nasmyth in Gregg 1973) 
e, cm' 
1.44 
0.03 
*0 
0.05, 0.07, 0.11, 
0.17, 1.0 
0.21 
0.08 
0.02 
Open sea, surface mixed 
layer (50 m) (Gregg 1973) 
0.002 
2 -1 
Functional Regressions for F, cm~ sec 
West Passage F = 0.007 Cl.89 (6) 
Microcosms with one paddle F = 0.108 Cl.38 
with half paddle F = 0.013 Cl.73 
The simpler measurements of horizontal dye patch dispersion suggested that 
while the one paddle microcosms were considerably more turbulent than those 
with half a paddle, both were more rapidly mixed than the bay (Table 25-2). 
This same trend with respect to differences between the whole paddle and half 
paddle microcosms was also shown by the weight loss ot gypsum blocks and 
the gas exchange measurements (Table 25-2). However, both of these 
parameters indicated substantially higher mixing rates in the bay than in any ot 
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